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MODEL 5081-T SECTION 1.0
DESCRIPTION AND SPECIFICATIONS
SECTION 1.0
DESCRIPTION AND SPECIFICATIONS
• CHOICE OF COMMUNICATION PROTOCOL: HART or FOUNDATION Fieldbus.
• LARGE, EASY-TO-READ two-line display shows the process measurement and temperature.
• SIMPLE MENU STRUCTURE.
• ROBUST NEMA 4X and NEMA 7B ENCLOSURE.
• INTRINSICALLY SAFE DESIGN allows the transmitter to be used in hazardous environments
(with appropriate safety barriers).
• NON-VOLATILE MEMORY retains program settings and calibration data during power failures.
• MEASURES CONDUCTIVITY, % CONCENTRATION, PPM, OR CUSTOM CURVE VARIABLE.
• AUTOMATIC TC RECOGNITION simplifies start up.
• AUTOMATIC/MANUALTEMPERATURE COMPENSATION ensures accurate monitoring and control.
• AUTOMATIC COMPENSATION FOR SENSOR CABLE RESISTANCE improves accuracy of high
conductivity/ low resistivity measurements.
• BUILT-IN PERCENTCONCENTRATION CURVES INCLUDE 0-15% NaOH, 0-16% HCl, 0-30%
and 96-99.7% H2SO4.
1.1 FEATURES AND APPLICATIONS
The Model 5081-T can be used to measure conductivity
in a variety of process liquids. The 5081 is compatible
with most Rosemount Analytical sensors. See the
Specifications section for details.
The transmitter has a rugged, weatherproof, corrosion-
resistant enclosure (NEMA 4X and IP65) of epoxy-painted
aluminum. The enclosure also meets NEMA7B explo-
sion-proof standards.
The transmitter has a two-line seven-segment display.
The main measurement appears in 0.8-inch (20 mm) high
numerals. The secondary measurement, temperature
(and pH if free chlorine is being measured), appears in
0.3-inch (7 mm) high digits.
Two digital communication protocols are available: HART
(model option -HT) and FOUNDATION Fieldbus (model
options -FF and FI). Digital communications allows
access to AMS (Asset Management Solutions). Use AMS
to set up and configure the transmitter, read process vari-
ables, and troubleshoot problems from a personal com-
puter or host anywhere in the plant.
A handheld infrared remote controller or the HARTand
FOUNDATION Fieldbus Model 375 communicator can also
be used for programming and calibrating the transmitter.
The remote controller works from as far away as six feet.
Housed in a rugged NEMA 4X and NEMA7 case, the
5081T measures conductivity or resistivity in the harshest
environments. Transmitter can also be configured, using
the "Custom Curve" feature, to measure ppm, %, or a no
unit variable according to a programmable conductivity vs.
variable curve. The transmitter will automatically recog-
nize the type of RTD (Pt100 or Pt1000) being used.
Measurements are automatically corrected for the resist-
ance of the sensor cable to improve accuracy of high con-
ductivity readings. Temperature compensation choices
are linear slope correction or none (display of raw conduc-
tivity.